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Physiological cellular responses and adaptations of Rhodococcus erythropolis IBB_(Po1) to toxic organic solvents

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Journal of Environmental Sciences 2014年第10期26卷 2065-2075页

作者： Mihaela marilena Stancu Institute of Biology Bucharest of Romanian Academy Bucharest 060031 P.O. Box 56-53 Romania

A new Gram-positive bacterium, Rhodococcus erythropolis IBBPo1（KF059972.1） was isolated from a crude oil-contaminated soil sample by enrichment culture method. R. erythropolis IBBPo1 was able to tolerate a wide range of toxic compounds, such as antibiotics（800–1000 μg/mL）,synthetic surfactants（50–200 μg/mL）, and organic solvents（40%–100%）. R. erythropolis IBBPo1 showed good tolerance to both alkanes（cyclohexane, n-hexane, n-decane） and aromatics（toluene, styrene, ethylbenzene） with logPOW（logarithm of the partition coefficient of the solvent in octanol–water mixture） values between 2.64 and 5.98. However, alkanes were less toxic for R. erythropolis IBBPo1 cells, compared with aromatics. The high organic solvent tolerance of R. erythropolis IBBPo1 could be due to the presence in their large genome of some catabolic（alkB, alkB1, todC1, todM, xylM）, transporter（HAE1） and trehalose-6-phosphate synthase（otsA1, KF059973.1） genes. Numerous and complex physiological cellular responses and adaptations involved in organic solvent tolerance were revealed in R. erythropolis IBBPo1 cells exposed 1 and 24 hr to 1% organic solvents. R. erythropolis IBBPo1 cells adapt to 1% organic solvents by changing surface hydrophobicity, morphology and their metabolic *** modifications in otsA1 gene sequence were also observed in cells exposed to organic solvents（except ethylbenzene）.

关键词： Rhodococcus erythropolis Adaptation Organic solvents

Analysis of predictor equations for determining the blast-induced vibration in rock blasting

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International Journal of Mining Science and Technology 2019年第6期29卷 905-915页

作者： marilena Cardu Dario Coragliotto Pierpaolo Oreste DIATI Politecnico di Torino 10129 TorinoItaly IGG-CNR Torino 10129Italy Lochaline Quartz Sand Ltd. Lochaline MinePA805LQ MorvernScotlandUnited Kingdom

The paper proposes a new empirical correlation designed to complement the‘‘site laws"currently used to evaluate the attenuation in the rock masses of vibrations induced by rock *** formula contains a deformed exponential known as the K-exponential,which seems to well represent a large number of both natural and artificial phenomena ranging from astrophysics to quantum mechanics,with some extension in the field of economics and *** validation of the formula was performed via the analysis of vibration data covering a number of case studies,which differed in terms of both operation and rock type.A total of 12 experimental cases were analysed and the proposed formulation exhibited a good performance in 11 of *** particular,the proposed law,which was built using blast test data,produced very good approximations of the points representing the vibration measurements and would thus be useful in organising production ***,the developed formula was found to work less well when a correlation obtained for a given site was applied to another presenting similar types of rocks and operations,and thus should not be employed in the absence of measurements from test data.

关键词： Rock blasting Vibrations Predictor equation Site law K-statistics K-exponential

Squarefree Monomial Modules and Extremal Betti Numbers

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Algebra Colloquium 2016年第3期23卷 519-530页

作者： marilena Crupi Carmela Ferro University of Messina Department of Mathematics and Computer Science Viale Ferdinando Stagno d'Alcontres 31 Messina 98166 Italy

Let K be a field and let S = K[x1,...,xn] be a polynomial ring over K. Let F = ir=1 Sei be a finitely generated graded free S-module with basis {e1,..., er} in degrees f1,..., fr such that f1≤ f2 ~≤……≤ fr. We examine some classes of squarefree monomial submodules of F. Hence, we focalize our attention on the Betti table of such classes in order to analyze the behavior of their extremal Betti numbers.

关键词： graded modules squarefree monomial modules minimal graded resolutions

Algebraic Properties of Universal Squarefree Lexsegment Ideals

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Algebra Colloquium 2016年第2期23卷 293-302页

作者： marilena Crupi Monica La Barbiera University of Messina Department of Mathematics and Computer Science Viale Ferdinando Stagno d'Alcontres 31 98166 Messina Italy

Let K be a field and let A = K[X1,...,Xn] be the polynomial ring in X1, ..., Xn with coefficients in K. In this paper we study the universal squarefree lexsegment ideals, and put our attention on their combinatorics computing some invariants. Moreover, we study the link between such a special class of squarefree lexsegment ideals and the so-called s-sequences.

关键词： monomial ideals squarefree lexicographic ideals minimal resolutions s-sequences standard invariants

A Recursive Basis for Primitive Forms in Symplectic Spaces and Applications to Heisenberg Groups

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Acta Mathematica Sinica,English Series 2016年第3期32卷 265-285页

作者： Annalisa BALDI marilena BARNABEI Bruno FRANCHI Dipartimento di Matematica Piazza di Porta S.Donato 540126 BolognaItaly

This paper is divided in two parts： in Section 2, we define recursively a privileged basis of the primitive forms in a symplectic space（V^（2n）, ω）. Successively, in Section 3, we apply our construction in the setting of Heisenberg groups H^n, n ≥ 1, to write in coordinates the exterior differential of the so-called Rumin＇s complex of differential forms in H^n.

关键词： Symplectic manifolds differential forms Heisenberg groups combinatorial functions

Fungal spores and pollen in particulate matter collected during agricultural activities in the Po Valley(Italy)

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Journal of Environmental Sciences 2016年第8期28卷 229-240页

作者： Chiara Telloli Milvia Chicca marilena Leis Carmela Vaccaro Italian National Agency for New Technologies Energy and Sustainable Economic Development (ENEA) Technical Unit for Environmental Assessment Models Methods and Technologies (UTVALAMB) Air Quality Laboratory (AIR) Department of Life Science and Biotechnologies Ferrara University Department of Physics and Earth Sciences Ferrara University

Airborne particulate matter（PM） containing fungal spores and pollen grains was sampled within a monitoring campaign of wheat threshing, plowing and sowing agricultural operations. Fungal spores and pollen grains were detected and identified on morphological basis. No studies were previously available about fungal spore and pollen content in agricultural PM in the Po Valley. Sampling was conducted in a Po Valley farmland in Mezzano（Ferrara, Italy）. The organic particles collected were examined by scanning electron microscopy with energy dispersive X-ray spectrometer. Fungal spores and pollen grains were identified when possible at the level of species. The most frequent components of the organic particles sampled were spores of Aspergillus sp., which could represent a risk of developing allergies and aspergillosis for crop farmers.

关键词： Wheat Aspergillosis Emilia-Romagna Morphology SEM–EDS

Complexity analysis of blast-induced vibrations in underground mining: A case study

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International Journal of Mining Science and Technology 2012年第1期22卷 125-131页

作者： Cardu marilena Dompieri Mauricio Seccatore Jacopo Department of Land Environment and Geotechnology (DITAG) Corso Duca degli Abruzzi IGAG C.N.R. Corso Duca degli Abruzzi Ontonix Brasil Rua Madre Rita Amada de Jesus Sao Paulo Brazil Mining and Petroleum Engineering Department University of Sao Paulo Sao Paulo Brazil

Blasting in geological bodies is an industrial process acting in an environment characterized by high uncertainties (natural joints, faults, voids, abrupt structural changes), which are transposed into the process parameters (e.g. energetic transfer to rock mass, hole deviations, misfires, vibrations, fly-rock, etc.). The approach to this problem searching for the "optimum" result can be ineffective. The geological environment is marked out by too many uncertainties, to have an "optimum" suitable to different applications. Researching for "Robustness" in a blast design gives rise to much more efficiency. Robustness is the capability of the system to behave constantly under varying conditions, without leading to unexpected results. Since the geology varies from site to site, setting a robust method can grant better results in varying environments, lowering the costs and increasing benefits and safety. Complexity Analysis (C.A.) is an innovative approach to systems. C.A. allows analyzing the Complexity of the Blast System and the criticality of each variable (drilling, charging and initiation parameters). The lower is the complexity, the more robust is the system, and the lower is the possibility of unexpected results. The paper presents the results obtained thanks to the C.A. approach in an underground gypsum quarry (Italy), exploited by conventional rooms and pillars method by drilling and blasting. The application of C.A. led to a reliable solution to reduce the charge per delay, hence reducing the impact of ground vibration on the surrounding structures. The analysis of the correlation degree between the variables allowed recognizing empirical laws as well.

关键词： Drilling and blasting Complexity analysis Vibrations control

On product affine hyperspheres in R^n+1

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Science China Mathematics 2020年第10期63卷 2055-2078页

作者： Xiuxiu Cheng Zejun Hu marilena Moruz Luc Vrancken School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Financial Engineering Zhengzhou 450001China Department of Mathematics KU LeuvenLeuven 3001Belgium Institut des Sciences et Techniques de Valenciennes(ISTV) Universit´e Polytechnique Hauts de FranceValenciennes 59313France

In this paper,we study locally strongly convex affine hyperspheres in the unimodular affine space Rn+1 which,as Riemannian manifolds,are locally isometric to the Riemannian product of two Riemannian manifolds both possessing constant sectional *** the main result,a complete classification of such affine hyperspheres is ***,as direct consequences,3-and 4-dimensional affine hyperspheres with parallel Ricci tensor are also classified.

关键词： affine hypersurface affine metric affine hypersphere Levi-Civita connection constant sectional curvature parallel Ricci tensor

Prognostics for Lithium-ion batteries for electric Vertical Take-off andLanding aircraft using data-driven machine learning

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Energy and AI 2023年第2期12卷 145-162页

作者： Mihaela Mitici Birgitte Hennink marilena Pavel Jianning Dong Faculty of Science Utrecht UniversityHeidelberglaan 83584 CSUtrechtThe Netherlands Faculty of Aerospace Engineering Delft University of TechnologyKluyverweg 1HS 2926DelftThe Netherlands Electrical Engineering Mathematics and Computer Science FacultyTU Delft2628 CDDelftThe Netherlands

The health management of batteries is a key enabler for the adoption of Electric Vertical Take-off and Landingvehicles (eVTOLs). Currently, few studies consider the health management of eVTOL batteries. One distinctcharacteristic of batteries for eVTOLs is that the discharge rates are significantly larger during take-off andlanding, compared with the battery discharge rates needed for automotives. Such discharge protocols areexpected to impact the long-run health of batteries. This paper proposes a data-driven machine learningframework to estimate the state-of-health and remaining-useful-lifetime of eVTOL batteries under varying flightconditions and taking into account the entire flight profile of the eVTOLs. Three main features are consideredfor the assessment of the health of the batteries: charge, discharge and temperature. The importance of thesefeatures is also quantified. Considering battery charging before flight, a selection of missions for state-ofhealth and remaining-useful-lifetime prediction is performed. The results show that indeed, discharge-relatedfeatures have the highest importance when predicting battery state-of-health and *** several machine learning algorithms, it is shown that the battery state-of-health and remaining-useful-lifeare well estimated using Random Forest regression and Extreme Gradient Boosting, respectively.

关键词： Electric Vertical Take-off and Landing vehicles Lithium-ion battery State-of-health Machine learning Remaining-useful-life